| 摘要 |
PURPOSE:To enable clogging of a filter to be easily removed by a method wherein a change-over valve is attached to each of a path supplying liquid to a sub tank, a path feeding washing liquid, a path feeding the washing liquid through a liquid discharging means, and a path connecting a drainage part. CONSTITUTION:In the case where an apparatus is washed, a first path 1 is intercepted by closing a change-over valve 5 to make washing liquid be not mixed in a main tank 13. Then, change-over valve 6, 7 on a washing liquid tank 15 interconnecting side are opened, and lastly a change-over valve 8 on a drainage pump 14 interconnecting side is opened to suck the washing liquid into a sub tank 9 with a suction pump through a second path 2 and a third path 3. Consequently the washing liquid from the second path 2 flows to a downstream side of the sub tank 9, and flows to an upstream side through a filter 10. Besides the washing liquid from the third path 3 flows into a nozzle 11 via adhesion pad 16 and further flows to the upstream side from the downstream side of the sub tank 9 through the filter 10. Therefore, a lamp or the like of ink being the principal cause for clogging by sticking to the upstream side of the filter 10 can be effectively removed and the apparatus can be easily washed. |
